JavaParser doesn't seem to be able to find dot-chained method calls

[geajack]

Taking the following code and input with javaparser 3.24.7, I get the output f().g(), but I would expect the output:

f().g()
f()

Code:

package parser;

import java.lang.System;

import com.github.javaparser.JavaParser;
import com.github.javaparser.Providers;
import com.github.javaparser.Provider;
import com.github.javaparser.ParseStart;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.expr.MethodCallExpr;
import com.github.javaparser.ast.visitor.VoidVisitorAdapter;

public class Parser {
    
    public static void main(String[] args)
    {
        JavaParser parser = new JavaParser();
        Provider provider = Providers.provider(System.in, parser.getParserConfiguration().getCharacterEncoding());
        ParseStart<MethodDeclaration> start = ParseStart.METHOD_DECLARATION;        
        
        MethodDeclaration root = parser.parse(start, provider).getResult().get();

        ExpressionExtractor expressionExtractor = new ExpressionExtractor();
        root.accept(expressionExtractor, null);
    }

    static class ExpressionExtractor extends VoidVisitorAdapter<Void>
    {
        public void visit(MethodCallExpr node, Void none)
        {
            System.out.println(node.toString());
        }
    }

}

Input:

void function ()
{
    f().g();
}

It seems like the parser just doesn't visit the "inner" call to f(), only its ancestor in the AST.

[jlerbsc]

Your visitor stops visiting the AST after calling the first MethodCallExpr. You need to modify it like this.

static class ExpressionExtractor extends VoidVisitorAdapter<Void>
{
    public void visit(MethodCallExpr node, Void none)
    {
        System.out.println(node.toString());
        **super.visit(node, node);**
    }
}

[jlerbsc]

I'm closing this issue because I think I answered the question. If not, you can reopen it.